Question

A wall of length 9 m is to be built on a ground. The thickness of the wall is 1 m and its height is 12 m. If a brick with dimensions 4m $\times$ 3m $\times$ 1m is removed, calculate the remaining volume of the wall.

• A. 108 cubic m
• B. 100 cubic m
• C. 86 cubic m
• D. 96 cubic m

Answer 1

The correct option is D 96 cubic m

Remaining volume = Volume of the wall - Volume of the brick

Volume of cuboid
= Length $\times$ Width $\times$ Height

Volume of the wall = 9 $\times$ 12 $\times$ 1
= 108 cubic m

Volume of the brick = 4 $\times$ 3 $\times$ 1
= 12 cubic m

Remaining volume = 108 - 12
= 96 cubic m